physical education. n. (Education) training and practice in sports, gymnastics, etc, as in schools and colleges. Abbreviation: PE. physâ²ical educaâ²tion. n. instruction in sports, exercise, and hygiene, esp. as part of a school or college program.
3. Stress/injury. Stress on the tissues or any type of injury in the mouth can cause canker sores. Since the sores are actually tiny ulcers, they can be caused by any kind of hard brushing or eating something that can cause bruises or lead to tissue inflammation in the mouth.
Cracking of the corners of the mouth, and subsequent licking to keep them moist, sets the stage for infection. Inside The Mouth Going Out. Conditions inside the mouth leading to perleche include anything that affects normal and healthy saliva flow or causes mouth dryness that in turn leads to infection. Other causes include: Denture stomatitis (âstomaâ â mouth; âitisâ â inflammation) is an inflammation of the tissues under a denture.